16851666668452 has 48 divisors (see below), whose sum is σ = 36787825791360. Its totient is φ = 6561914227200.

The previous prime is 16851666668449. The next prime is 16851666668497. The reversal of 16851666668452 is 25486666615861.

It is a super-2 number, since 2×16851666668452² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14740549 + ... + 15842572.

It is an arithmetic number, because the mean of its divisors is an integer number (766413037320).

Almost surely, 2^{16851666668452} is an apocalyptic number.

It is an amenable number.

16851666668452 is an abundant number, since it is smaller than the sum of its proper divisors (19936159122908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16851666668452 is a wasteful number, since it uses less digits than its factorization.

16851666668452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30584932 (or 30584930 counting only the distinct ones).

The product of its digits is 597196800, while the sum is 70.

The spelling of 16851666668452 in words is "sixteen trillion, eight hundred fifty-one billion, six hundred sixty-six million, six hundred sixty-eight thousand, four hundred fifty-two".